Path Traversal in Isaacs Node-tar
CVE-2026-29786
node-tar is a full-featured Tar for Node.js. Prior to version 7.5.10, tar can be tricked into creating a hardlink that points outside the extraction directory by using a drive-relative link target such as C:../target.txt, which enables fil…
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.004 (33.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N.
Affected products
- Isaacs Node-tar — versions < 7.5.10
- Isaacs Tar
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Frequently asked questions
- What is CVE-2026-29786?
- CVE-2026-29786 is a medium-severity vulnerability in Isaacs Node-tar, classified under Path Traversal. CVSS score: 6.3/10. Published 2026-03-07.
- How severe is CVE-2026-29786?
- Medium severity. CVSS v3 base score is 6.3 out of 10.
- Is CVE-2026-29786 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.